8.1
High
CVE-2021-1433 A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker…
Description
A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when the device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. The attacker must have a man-in-the-middle position between Cisco vManage and an associated device that is running an affected version of Cisco IOS XE SD-WAN Software. An exploit could allow the attacker to conduct a controllable buffer overflow attack (and possibly execute arbitrary commands as the root user) or cause a device reload, resulting in a denial of service (DoS) condition.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XE Software | Versions not published |
References
Timeline
- Published
- Last modified
Other CVEs of Cisco IOS XE Software
The 248 CVEs of Cisco IOS XE Software →
CVE-2026-20311
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote…
6.3
Medium
CVE-2026-20301
A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client protocol, of…
8.6
High
CVE-2026-20308
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote…
4.3
Medium
CVE-2026-20273
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering…
8.6
High